vVariant: Value in which one of the bits is to be set to either True or False. Function returns Null if vVariant is Null.

vBit: The number of the bit whose value within variable vValue is to be changed. Function returns Null if vBit is Null or cannot be fixed up to a number. vBit 1 (one) is the most-significant-bit within Strings and the least-significant-bit within numbers.

Function returns vVariant unchanged if vBit is <= 0 (less than or equal to zero).

vValue: The value to which the specified bit will be set. Function returns Null if vValue is Null or cannot be fixed up to a number.

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